Sam Groth advanced to the last eight for the second straight year, striking 21 aces past qualifier Lukasz Kubot in a 6-4, 6-7(2), 7-6(3) victory over two hours and 29 minutes. Kubot hit 14 aces and saved six of seven break points.

Sam Groth advanced to the last eight for the second straight year, striking 21 aces past qualifier Lukasz Kubot in a 6-4, 6-7(2), 7-6(3) victory over two hours and 29 minutes. Kubot hit 14 aces and saved six of seven break points.

Sam Groth advanced to the last eight for the second straight year, striking 21 aces past qualifier Lukasz Kubot in a 6-4, 6-7(2), 7-6(3) victory over two hours and 29 minutes. Kubot hit 14 aces and saved six of seven break points.